package com.lagou.service.impl;

import com.lagou.base.StatusCode;
import com.lagou.dao.CourseContentDao;
import com.lagou.dao.impl.CourseContentDaoImpl;
import com.lagou.pojo.Course;
import com.lagou.pojo.Course_Lesson;
import com.lagou.pojo.Course_Section;
import com.lagou.service.CourseContentService;
import com.lagou.utils.DateUtils;

import java.util.List;

/*** 课程内容管理 Service层实现类 * */
public class CourseContentServiceImpl implements CourseContentService {


    CourseContentDao contentDao = new CourseContentDaoImpl();

    @Override
    public List<Course_Section> findSectionAndLessonByCourseId(int courseId) {
        List<Course_Section> sections =
                contentDao.findSectionAndLessonByCourseId(courseId);
        return sections;
    }


    @Override
    public Course findCourseByCourseId(int courseId) {
        Course course = contentDao.findCourseByCourseId(courseId);
        return course;
    }

    @Override
    public String saveSection(Course_Section section) {
//1.补全章节信息
        section.setStatus(2); //状态，0:隐藏；1：待更新；2：已发布
        String date = DateUtils.getDateFormart();
        section.setCreate_time(date);
        section.setUpdate_time(date);
//2.调用Dao进行插入
        int i = contentDao.saveSection(section);
//3.根据插入是否成功,封装对应信息
        if (i > 0) {
//保存成功
            String result = StatusCode.SUCCESS.toString();
            return result;
        } else {
//保存失败
            String result = StatusCode.FAIL.toString();
            return result;
        }
    }


    @Override
    public String updateSection(Course_Section section) {
//1.补全章节信息
        String date = DateUtils.getDateFormart();
        section.setUpdate_time(date);
//2.调用Dao进行插入
        int i = contentDao.updateSection(section);
//3.根据修改是否成功,封装对应信息
        if (i > 0) {
//保存成功
            String result = StatusCode.SUCCESS.toString();
            return result;
        } else {
//保存失败
            String result = StatusCode.FAIL.toString();
            return result;
        }
    }

    //修改章节状态
    @Override
    public String updateSectionStatus(int id, int status) {
//调用Dao 修改状态
        int i = contentDao.updateSectionStatus(id, status);
//3.根据修改是否成功,封装对应信息
        if (i > 0) {
            String result = StatusCode.SUCCESS.toString();
            return result;
        } else {
            String result = StatusCode.FAIL.toString();
            return result;
        }
    }

    //保存课时信息
    @Override
    public String saveLesson(Course_Lesson lesson) {
        //1.补全课时信息
        String date = DateUtils.getDateFormart();
        lesson.setCreate_time(date);
        lesson.setUpdate_time(date);
//2.调用Dao进行插入
        int i = contentDao.saveLesson(lesson);
//3.根据插入是否成功,封装对应信息
        if (i > 0) {
//保存成功
            String result = StatusCode.SUCCESS.toString();
            return result;
        } else {
//保存失败
            String result = StatusCode.FAIL.toString();
            return result;
        }
    }

    @Override
    public String updateLesson(Course_Lesson lesson) {
        //1.补全课时信息
        String date = DateUtils.getDateFormart();
        lesson.setUpdate_time(date);

        //调用dao
        int i = contentDao.updateLesson(lesson);
        //3.根据修改是否成功,封装对应信息
        if(i > 0){
//保存成功
            String result = StatusCode.SUCCESS.toString();
            return result;
        }else{
//保存失败
            String result = StatusCode.FAIL.toString();
            return result;
        }
    }

}
